diff --git a/calendar/test/browser/invitations/browser_imipBarExceptionCancel.js b/calendar/test/browser/invitations/browser_imipBarExceptionCancel.js
index b8264bf109..5435633b74 100644
--- a/calendar/test/browser/invitations/browser_imipBarExceptionCancel.js
+++ b/calendar/test/browser/invitations/browser_imipBarExceptionCancel.js
@@ -28,6 +28,7 @@ let transport;
  * Initialize account, identity and calendar.
  */
 add_setup(async function() {
+  requestLongerTimeout(3);
   let account = MailServices.accounts.createAccount();
   account.incomingServer = MailServices.accounts.createIncomingServer(
     "receiver",